I used SumaGroulx on Corn, Soybeans and Wheat, in the 2014 season. I saw benefits in all three crops. In some corn plots I tried 4 Hybrids with SumaGroulx and the same 4 Hybrids without SumaGroulx. The 4 plots with SumaGroulx out yielded the other from 8 to 18 bushel per acre.
Where I planted a wheat crop, after corn; I had a better germination of wheat crop – with the use of SumaGroulx on the corn previously.
I put SumaGroulx on our corn and it yielded 266 bushel per acre. I plan on using more SumaGroulx in 2015!